Natural wind-driven ultra-compact and highly efficient hybridized nanogenerator for self-sustained wireless environmental monitoring system

Rahman, M. Toyabur; Salauddin, Md.; Maharjan, Pukar; Rasel, M. Salauddin; Cho, Hyunok; Park, Jae Yeong

doi:10.1016/j.nanoen.2018.12.052

Cited by 111 publications

(59 citation statements)

References 53 publications

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“…Besides the water-driven TENG, wind-driven TENG was also widely investigated [179][180][181][182][183]. For example, Fan et al demonstrated a coaxial rotatory freestanding TENG (CRF-TENG) for collecting wind energy using electrospinning polyvinylidene fluoride (PVDF) nanofiber membrane as triboelectric material (Fig.…”

Section: Water Splitting Driven By a Triboelectric Nanogeneratormentioning

confidence: 99%

Water Splitting: From Electrode to Green Energy System

et al. 2020

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HIGHLIGHTS • Bifunctional electrode and electrolytic cell configuration for electrochemical water splitting are reviewed. • The different green energy systems powered water splitting are summarized and discussed. • An outlook of future research prospects for the development of green energy system powered water splitting in practical application process is proposed. ABSTRACT Hydrogen (H 2) production is a latent feasibility of renewable clean energy. The industrial H 2 production is obtained from reforming of natural gas, which consumes a large amount of nonrenewable energy and simultaneously produces greenhouse gas carbon dioxide. Electrochemical water splitting is a promising approach for the H 2 production, which is sustainable and pollution-free. Therefore, developing efficient and economic technologies for electrochemical water splitting has been an important goal for researchers around the world. The utilization of green energy systems to reduce overall energy consumption is more important for H 2 production. Harvesting and converting energy from the environment by different green energy systems for water splitting can efficiently decrease the external power consumption. A variety of green energy systems for efficient producing H 2 , such as two-electrode electrolysis of water, water splitting driven by photoelectrode devices, solar cells, thermoelectric devices, triboelectric nanogenerator, pyroelectric device or electrochemical water-gas shift device, have been developed recently. In this review, some notable progress made in the different green energy cells for water splitting is discussed in detail. We hoped this review can guide people to pay more attention to the development of green energy system to generate pollution-free H 2 energy, which will realize the whole process of H 2 production with low cost, pollution-free and energy sustainability conversion.

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Section: Water Splitting Driven By a Triboelectric Nanogeneratormentioning

confidence: 99%

Water Splitting: From Electrode to Green Energy System

et al. 2020

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“…With the advancement of science and technology, multifunctional portable electronics, such as fitness/healthcare monitors, are being use more frequently in our daily life . Likewise, the wireless sensor networks (WSNs) and the Internet of Things (IoT) are flourishing in recent years, which critically rely on a large number of sensors . These sensors are randomly distributed in moving objects to monitor the running state and location.…”

Section: Introductionmentioning

confidence: 99%

Biomechanical Energy‐Driven Hybridized Generator as a Universal Portable Power Source for Smart/Wearable Electronics

Rahman

Rana

Salauddin

et al. 2020

Advanced Energy Materials

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The fast growth of smart electronics requires novel solutions to power them sustainably. Portable power sources capable of harvesting biomechanical energy are a promising modern approach to reduce battery dependency. Herein, a novel elastic impact‐based nonresonant hybridized generator (EINR‐HG) is reported to effectively harvest biomechanical energy from diverse human activities outdoors. Through the rational integration of a nonlinear electromagnetic generator with two contact‐mode triboelectric nanogenerators, the proposed EINR‐HG generates hybrid electrical output simultaneously under the same mechanical excitations. By introducing a flux‐concentrator with a nanowire‐nanofiber surface modification, significant improvement in the energy harvesting efficiency of the EINR‐HG is achieved. After optimizing using simulations and vibration tests, the as‐fabricated EINR‐HG delivers an outstanding normalized power density of 3.13 mW cm−3 g−2 across a matching resistance of 1.5 kΩ at 6 Hz under 1 g acceleration. Under human motion testing, the EINR‐HG generates an optimal output power of 131.4 mW with horizontal handshaking. With a customized power management circuit, the EINR‐HG serves as a universal power source that successfully drives commercial smart electronics, including smart bands and smartphones. This work shows the massive potential of biomechanical energy‐driven hybridized generators for powering personal electronics and portable healthcare monitoring devices.

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“…Second, the EANG is very easy to unload, maintain and reassemble since there is no mechanical connection between the driver and the rotator. Therefore, the hybrid NG can be easily connected with various external torques from wind and water, as shown in Figure g, whereas many traditional hybrid NGs can only harvest one type of energy . Third, the EANG can easily be fully encapsulated to become waterproof, which would stabilize its output performance and make it adaptable to various harsh environments.…”

Section: Resultsmentioning

confidence: 99%

An Easily Assembled Electromagnetic‐Triboelectric Hybrid Nanogenerator Driven by Magnetic Coupling for Fluid Energy Harvesting and Self‐Powered Flow Monitoring in a Smart Home/City

Zhong

Zhao

Guo

et al. 2019

Adv Materials Technologies

103

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with smart devices, is driven by reliable power. With the continuous development of microelectromechanical systems and the Internet of Things (IoT), many small electronic devices, which require a sustainable, portable, distributed, wireless, and even implantable power source, are increasingly widely used in daily life and industrial monitoring environments. [1] However, traditional power supply solutions, which include electric cables and batteries, cannot fully satisfy their special demands. [2] Fortunately, mechanical energy, which is widely present in the environment, such as via wind and water flow, contains a large amount of easily accessible energy. [3] Regarding mechanical energy harvesting techniques, until now, four main energy conversion mechanisms are used: electromagnetic, [4] piezoelectric, [5] electrostatic, [6] and triboelectric. [7] In particular, triboelectric nanogenerators (TENGs), which were first described by Wang and coworkers in 2012 [8] and are based on the triboelectrification effect and electrostatic induction, are becoming the most important devices since they have many advantages, such as simple fabrication, light weight, low cost, high output voltage, and high durability, especially for human-related activities. Recently, Harvesting wind energy and water flow energy from the living environment to efficiently and conveniently power many small electric devices at home is becoming increasingly important for the development of the smart home system. Triboelectric nanogenerators (TENGs) are considered to be one of the most effective devices to harness various types of mechanical energy. Here, an easily assembled electromagnetic-triboelectric hybrid nanogenerator (EANG) driven by magnetic coupling is reported. The introduction of magnetic coupling makes it easy to package, maintain, and assemble a nanogenerator (NG), so its performance is very stable regardless of environmental variations. A sliding freestanding mode TENG and a rotary electromagnetic generator (EMG) are integrated to improve their output and broaden the frequency range of external energy. It is shown that the EANG can be conveniently integrated with a wind cup or water turbine and harvest fluid energy to power small electronic devices, such as a humidity sensor and temperature sensor. Moreover, a NG can be used as a self-powered flow sensor to monitor the flow rate of outdoor wind and tap water. These results can be used to help solve practical problems regarding energy supplying and sensing in a smart home, smart building, and smart city.The ORCID identification number(s) for the author(s) of this article can be found under https://doi.

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Natural wind-driven ultra-compact and highly efficient hybridized nanogenerator for self-sustained wireless environmental monitoring system

Cited by 111 publications

References 53 publications

Water Splitting: From Electrode to Green Energy System

Water Splitting: From Electrode to Green Energy System

Biomechanical Energy‐Driven Hybridized Generator as a Universal Portable Power Source for Smart/Wearable Electronics

An Easily Assembled Electromagnetic‐Triboelectric Hybrid Nanogenerator Driven by Magnetic Coupling for Fluid Energy Harvesting and Self‐Powered Flow Monitoring in a Smart Home/City

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